Root-raised-cosine filter

In signal processing, a root-raised-cosine filter (RRC), sometimes known as square-root-raised-cosine filter (SRRC), is frequently used as the transmit and receive filter in a digital communication system to perform matched filtering. This helps in minimizing intersymbol interference (ISI). The combined response of two such filters is that of the raised-cosine filter. It obtains its name from the fact that its frequency response, H r r c ( f ) {displaystyle H_{rrc}(f)} , is the square root of the frequency response of the raised-cosine filter, H r c ( f ) {displaystyle H_{rc}(f)} : In signal processing, a root-raised-cosine filter (RRC), sometimes known as square-root-raised-cosine filter (SRRC), is frequently used as the transmit and receive filter in a digital communication system to perform matched filtering. This helps in minimizing intersymbol interference (ISI). The combined response of two such filters is that of the raised-cosine filter. It obtains its name from the fact that its frequency response, H r r c ( f ) {displaystyle H_{rrc}(f)} , is the square root of the frequency response of the raised-cosine filter, H r c ( f ) {displaystyle H_{rc}(f)} :